Edwin buthvin



E. R. DEER. PIANO HAMMER.

(ModeL) Patented Mar. 25

INVENTOR AttOfneg J block, which carries UNITED STATES EDWIN RUTHVINPIANO-H Application filed May 19, 1883. (Model.)

550 (ill whom, it may concern.-

Be it known that I, EDWIN R. OBER, a citizen of the United States,residing at Waterbury, in the county of Washington and State of Vermont,have invented a new and useful Piano-Hammer, of which the following is aspecification, reference companying drawings.

This invention relates to hammers for vibeing had to the ac bratingpiano-strings, to vibrate the same and device possessing superioradvantages in point of simplicity, inexpensiveness, durability, andgeneral efficiency.

In the drawings, Figure 1 is a perspective view of one of my improvedpiano-stringhammers. Fig. 2 is a vertical sectional view of the same.Fig. 3 is a detail perspective view of the parts separated. Fig. 4 is aperspective view, illustrating a modification.

Referring to the drawings, A designates the the hammer proper, and isprovided with the usual operating-arm B. T A is secured a forked piece,0, between the sides of which a circular hammer-disk, D, is arranged, ashereinafter specified. The piece 0 comprises a connecting-piece, E, fromwhich projects a screw, F, by which it is secured to the block A, andtwo side plates, G G, at the end of which are formed disks H, havingconical inner surfaces, I, in which are formed central perforations, J,one of which perforations is screw-threaded, as shown.

of wood, and a main striking surface or periphery, M, of felt or otherThe hub L is provided with a central perforation, N, that forms abearing for the disk, and has conical recesses O b placed between thesurfaces I I and the bottoms of the recesses. A transverse pin or screw,Q, is inserted through the perforations J J and N, and on this screw thedisk is adapted to turn.

The operation and advantages of my inven- OBER, OF WVATERBURY,

PATENT @FFICE.

VERMONT.

AMMER.

tion will be readily understood and appreciated.

rable, while the can, however, be readily removed the bearing-screw forsubstituthat the hammer strike the strings diagonally, it is onlynecessary to turn the forked piece that carries the hammer, itsscrew-connection with the block admitting of this movement,

' the string as full as I am aware that piano-hammers have heretoforebeen formed circular and secured benot broadly clalm this constructionand arrangement of

